Zener TVS clamp for 12V rails
The 1.5SMC12A TR13 PBFREE: Its 10.2V reverse standoff voltage means it sits across a 12V nominal rail without conducting in normal operation, only clamping when the line exceeds the 11.4V minimum breakdown threshold. At the full 90A peak pulse current (Ipp), the clamping voltage rises to 16.7V maximum — this is the voltage the downstream circuitry must survive during a transient event. The 1500W rating is the product of the clamping voltage and the peak current at the specified waveform, so derating for shorter or longer pulses follows the standard TVS power-derating curve.
Package and board integration
Housed in a DO-214AB (SMC) surface-mount package, the device has a wide operating temperature range from -65°C to 150°C junction. The SMC footprint is larger than the smaller SMA/SMB siblings, which helps spread the transient heat into the PCB copper — important for repetitive surge events where thermal accumulation matters. The part is marked as RoHS-compliant and lead-free (PBFREE suffix), so no special handling beyond standard MSL precautions is needed for reflow profiles typical of lead-free solder.
Sourcing and lifecycle status
It is a general-purpose TVS, not qualified to AEC-Q101, so it fits commercial and industrial designs rather than automotive under-hood applications. No pin-compatible second-source is listed by the manufacturer, but the 1.5SMC series from Central Semiconductor covers a wide range of standoff voltages in the same DO-214AB footprint.